S-Class (W220) 1999-2006: S 320 CDI, S 320, S430, S 500, S 600

Front Differential Fluid replacement

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Old 05-22-2020 | 03:15 PM
  #1  
triguy450's Avatar
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Joined: Jan 2011
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From: Lavallette, NJ
2006 S430, 2004 Porsche 996, 1999 Chevy K3500 Crew Cab Dually
Cool Front Differential Fluid replacement

Hi all, Just replacement the left front CV boots as one broke. I thought the occasional metal noise was coming from the bearings. I test drove today
and the metallic noise came back. I'm now leaning towards the front differential? I'd like to replace the gear oil. My mechanic told me I should do this
when changing the motor mounts. Has anyone replaced this oil? If so, how difficult was it? Thank you,
Ed
Old 05-28-2020 | 07:52 PM
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vinflouen's Avatar
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Joined: Jan 2009
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From: In The Woods Of NJ
2019 W222 S560 4Matic /2019 Chevy Suburban Premier
The way it was explained to me by the dealer was they have to slide out the right axle.
I am also told there is a 10mm port on the right side. Its a hex screw and you can get a vac in there are suck it out as best as you can.
I had a shop do this for me.

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